with mark warner whose senate intelligence committee is investigating this whistleblower complaint which we want to talk to him about. here the president over the weekend went after the whistleblower. you've been trying to get the whistleblower to come before your committee. is this impacting your ability to talk to the whistleblower? >> time will tell on that. but we've had a lot of questions about what the president did or didn't do with the ukranian president. but one area where we don't have more information to seek out is calling out the president's outrageous comments, both last thursday when he called the whistleblower and anyone else that he or she may have talked to, traitorous and like a spy, where he implied there should be physical harm to the whistleblower. when that kind of commentary was reinforced by his tweets over the weekend, even my republican colleagues who may not want to weigh in on the substance of the complaint need to stand up and push back on this president's